9th Honors States/Phases of Matter

If a gas occupies 2.7 Liters at a pressure of 2.00 atm, What will be its volume at a pressure of 4.5 atm?

• 5 L

• 1.2 L

• 4.5 L

• 1.2 atm

What will the temperature be when 3.00 L of a gas with a temperature of 27*C is compressed to 2.00 L.

• 13.3 K

• 200*C

• 13 *C

• 200K

A container of gas has 2.5 atm of pressure at 22 ˚C. What will the final pressure be at 75˚C?

• 2.9 atm

• 2.9 K

• 7,625.25 atm

• 3.25 cm3

A ping pong ball with a dent in it can be put into a pan of boiling water. After a short amount of time, the dent will pop out. Determine the best reason for this occurrence.

• The ping pong ball plastic heats up and expands.

• The number of gas particles inside the ping pong ball increases causing more pressure.

• The gas particles inside speed up due to heat and cause an increase in pressure within the ball.

• Gas particles inside collide with each other less and with the ball more causing the dent to pop out.

Three balloons are inflated to the same size. The three balloons are submerged in buckets filled with ice water, tap water and water heated to 65°C. What results would you expect from this experiment?

• All the balloons would shrink

• All the balloons would expand.

• The balloon in the ice water would expand.

• The balloon in the 65°C water would expand.

Relate the pressure of a gas to its concentration of particles.

• Pressure will expand a gas, enlarging its volume and reducing its density and concentration of particles.

• Pressure will magnify a gas, developing its volume and multiplying its density and concentration of particles.

• Pressure will compress a gas, reducing its volume and giving it a greater density and concentration of particles.

• Pressure will accelerate a gas, extending its volume and allowing a smaller density and concentration of particles.

Explain the changes in molecular motion of particles as they change from solid to liquid to gas.

• As the phase changes occur, the freedom of motion of the particles increases.

• As the phase changes occur, the freedom of motion of the particles decreases.

• As the phase changes occur, the freedom of motion of the particles compresses.

• As the phase changes occur, the freedom of motion of the particles is constant.

When car tires are on hot pavement for too long, the pressure inside will ___________ and the volume within the tire will _____________.

• increase; decrease due to deflation

• decrease; remain unchanged

• increase; increase and possibly result in a blowout

• increase; remain unchanged as long as the temperature is constantly rising

Under which set of circumstances will the pressure of a gas DEFINITELY increase?

• Increasing the moles and increasing the volume of the gas.

• Raising the temperature and reducing the volume of the gas.

• Lowering the temperature and reducing the volume of the gas.

• Raising the temperature and increasing the volume of the gas.

Relate the temperature of a gas to the kinetic energy of its particles.

• As the temperature extends, the kinetic energy of the particles decreases.

• As the temperature decreases, the kinetic energy of the particles increases.

• As the temperature increases, the kinetic energy of the particles increases.

• As the temperature intensifies, the kinetic energy of the particles decreases